Which of the following is true of relationships between variables?
A. In a linear relationship between two variables, the strength and direction of the relationship changes over the range of both variables.
B. A linear relationship is much simpler to work with than a curvilinear relationship.
C. A negative relationship exists between two variables if low levels of one variable are associated with low levels of another.
D. The larger the size of the correlation coefficient between two variables, the weaker the association between them.
E. Relationships between variables lack direction.
Answer: B
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